﻿namespace EnergyGeneratorSimVisualizer.Converter
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Windows.Data;
    using System.Windows;

    /// <summary>
    /// 
    /// </summary>
    public class BooleanToVisibilityConverter:IValueConverter
    {
        /// <summary>
        /// Converts a value.
        /// </summary>
        /// <param name="value">The value produced by the binding source.</param>
        /// <param name="targetType">The type of the binding target property.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// A converted value. If the method returns null, the valid null value is used.
        /// </returns>
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value is bool)
            {
                var boolVal = (bool)value;

                if (boolVal)
                {
                    return Visibility.Visible;
                }
                else
                {
                    return Visibility.Hidden;
                }
            }
            else
            {
                return value;
            }
        }

        /// <summary>
        /// Converts a value.
        /// </summary>
        /// <param name="value">The value that is produced by the binding target.</param>
        /// <param name="targetType">The type to convert to.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// A converted value. If the method returns null, the valid null value is used.
        /// </returns>
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value is Visibility)
            {
                var visibilityValue = (Visibility)value;

                switch(visibilityValue)
                {
                    case Visibility.Visible:
                        return true;

                    case Visibility.Collapsed:
                    case Visibility.Hidden:
                        return false;

                    default:
                        return false;
                }
            }
            else
            {
                return value;
            }
        }
    }
}
